Heat distributing means for furnaces



Aug. 26, 1941. WEGNER 2,254,111

HEAT DISTRIBUTING MEANS \FOR FURNACES Filed May 6, 1938 4 Sheets-Sheet l Aug. 26, 1941. F, A, WEGNER 2,254,111

HEAT DISTRIBUTINGMEANS F OR FURNACES Filed May 6, 1938 4 Sheets-Sheet 2 ,FL QQ4,

-|mII v 1 E ailIVl/II/I/I/III/IIIIIIIIII/III! IIIIIIIIIIIIIIIIIIIIII/IIIII/A 1'1" 15 Aug. 26, 1941. F. A. WEGNER HEAT DISTRIBUTING MEANS FOR FURNACES 4 Sheets-Sheet 3 Filed May 6, 1938 Aug. 26, 1941. F, A, WEGNER 2,254,111

HEAT DISTRIBUTING MEANS FOR FURNACES Filed'May .6, 1938 4 SheetsSheet 4 Patented Aug. 26, 1941 HEAT DISTRIBUTING MEANS FOR NHFURNACES Frederick A. Wegner, Buffalo, N. Y. Application May 6, 1938, Serial No. 206,461

2 Claims.

This invention relates to practical and efiicient means for controlling the distribution of air within stoves and furnaces or other heaters, so that the correct amount of air is mixed with the generated gases of the burning fuel to promote proper combustion and complete burning of the fuel and the furnishing of maximum heat from a given or unit quantity of said fuel Within the furnace.

More particularly the invention has for its main object to provide a bottom draft deflector which maybe so positionedwithin the fire pot of the stove or furnace as to-promote combustion of the fuel in a comparatively narrow annular space around the edges of the deflector and next to the wall ofthe fire pot, the air passing from the ash chamber below the plate impinging upon practically the entire bottom surface of the deflector and properly directed by said deflector into the narrow annular space between the outer edges of the deflector and the wall of the fire pot to thus furnish the'required amount of air for complete combustion of the fuel and providing a continuous flame around the outer edges of the fire pot enveloping the unburned fuel upon the deflector and thereby doing away with the problem of unburned gases escaping through the chimney or stack.

Another object of the invention is the provision of means to properly support and position the deflector within the fire pot of the furnace.

A further object of the invention is to provide means adjustable with respect to the deflector so that deflectors of a definite dimension may be used and readily mounted in a fixed position within furnaces having fire pots of slightly varying internal diameters.

Another object of the invention is the pro vision of such a deflector plate for use in connection with furnaces provided with grates, said deflector having means for spacing the deflector plate from the grate upon which it is adapted to be supported, whereby the air for combustion may be properly directed and the air permitted to impinge upon practically the entire bottom surface of the deflector plate and thereby prevent injury thereto due to overheating.

Still another object of the invention is the provision of a deflector of this character having projecting members uponits outer edges'which serve as shaker grate means for releasing the ashes from the burning coals as the deflector is oscillated. v

A further object of-the invention is the provision of a deflector structure of the character here set forth supported withina furnace fire pot and having cooperating members independent of the fire pot for shaking ashes from the annular space surrounding the deflector.

Still another and important object of the invention is to provide suflicient air space between the bottom surface of the deflector plate and its outer edges and the top surfaces of the grate bars to permit proper amount of air to pass in an upward direction through the burning coals and directly adjacent, or around the edges of said plate, so that the fire is kept burning and a continuous flame is produced around the outer edges of the fire pot to prevent generated gas from escaping and consequent loss of heat.

Another object of the invention is the provision of annular aprons surrounding the fire pot of the furnace and suitably positioned between the fire pot and the furnace casing to properly direct the upward flow of cold air adjacent the fire pot and thus permit the cold air to be properly heated and commingle with the hot air in the upper part of the furnace, and furthermore, to provide proper air insulation between said aprons and the furnace casing tomaintain the casing in a relatively cool condition during the operaof this application and in which'drawings like reference characters indicatelike parts and in which I 1 Figure l is a perspective view of a form of deflector plate with the operating means therefor, said plate being of the oscillating type and having ash shaker or grate members at its outer edges; e

Figure 2 is a cross sectional view of a furnace fire pot with an oscillatory type deflector plate mounted therein, the plate being shown in slightly concavo-colnvex form and provided with ash shaker or grate members at its outer edges;

Figure 3 is a perspective view of one of the bearings for the supporting rod for the deflector plate shown in Figure 2;

Figure 4 is a cross sectional view of a furnace fire pot showing modified form of deflector plate supported in position therein and upon roller bearings; and

Figure 5 is also a cross sectional view of a furnacefire pot with a deflector of the type illustrated in Figure 1, and showing particularly the manner of mounting the plate within the fire pot of a furnace not having the usual grate, and the operating lever and connections for oscillating said plate and their relation to the plate and fire pot.

Figure 6 is a cross sectional view of a furnace fire pot showing still another modified form of deflector plate supported in positionwithin the fire pot and without a grate, the entire ash shaker or grate means being carried by the deflector plate structure to facilitate tilting of the deflector plate for dumping purposes, the section being taken on the line l2-l2 of Figure 7.

Figure 7 is a horizontal sectional View of the fire pot and deflector structure shown in Figure 6 taken on the line I3l3 of said figure.

Figure 8 is a cross sectional view of the fire pot and the type of deflector plate shownin Figure 6, the deflector plate being shown in tilted position for dumping and latching means being shown for maintaining the deflector plate in its normal position within the fire potfor' supporting the fuel supply.

The deflector l shown in Figures 1 and are flat plates arranged within the fire pot and supported at a central point 9 upon the supporting rods H) by means of clamping members I l these clamping members being drawn together by a bolt l2 for holding the deflector I in relatively fixed relation with respect to the fire pot, as will be obvious from the disclosure of Figure 5. The deflector as shown in these Figures 1 and 5 is adapted to be oscillated about its axis or point of support and this for the purpose of agitating and releasing the ashes resting upon the outwardly projecting grate fingers or members l3 arranged at the periphery or outer edges of said deflector plate. In this connection, it is desired to note that inwardly projecting fingers I I are arranged upon the fire pot wall and positioned in a plane slightly above the plane of the outwardly projecting fingers so as to cooperate therewith in effectively releasing or sifting the ashes from the narrow annular fuel space adjacent the fire pot wall. The operating means for oscillating the deflector plate l is also shown in these figures, the same comprising an operating lever l5 pivotally supported at 16 and connected by a link H to the underside of the plate I.

In the modification shown in Figure 2, the deflector plate 1 is of slightly concavo-convex form supported from a central point by suitable clamping members upon a single rod 19 suitably fixed at its ends to the fire pot structure at points below the position of the deflector plate, one of the supporting bearings for said rod 59 being shown in detail at 20 in Figure 3 of the drawings. In this construction, the deflector plate is also adapted for oscillation and said plate is provided with the outwardly projecting ash shaker or grate members 13 and the inwardly projecting fingers M on the fire pot are used for cooperation with said members l3.

As to the disclosure of Figure 4, it may be stated that the deflector l takes the form of a flat imperforate plate supported directly upon rollers 2% arranged at spaced points and projecting inwardly from the fire pot structure. In this modification also the deflector plate is provided with the outwardly projecting ash shaker or grate members i3 (resting upon the rollers) and the inwardly projecting fingers I4 are also provided for cooperation with said fingers IS.

The modified form of this invention illustrated by Figures 6, '7 and 8 provides a dumping type of deflector plate i which is supported upon a single rod 22 journaled in bearings 23 arranged upon the inner wall of the fire pot structure, said plate being suitably secured to said rod 22 at a central point by suitable clamping means indicated at 24. In this form of the invention moved with the deflector plate when tilting the structure for dumping purposes, and this upon the axis formed by the supporting rod 22. This deflector plate structure, including the plate I the ring 25, and the supporting rod 22, may be removed as a unit from the fire pot by merely lifting the same from its bearings 23. It is to be noted that the ring 25 is positioned below the deflector plate min the same plane with the supporting rod 22, and therefore the fingers I 4 are necessarily projected first in an upward direction and then inwardly so that the inwardly projecting portions of said fingers may be properly positioned above the members 13 at the outer edges of the deflector plate for proper cooperation therewith. Also the deflector plate I of this modification is adapted to be oscillated with respect to the ring and inwardly projecting finger structure by means of an operating lever 25 attached to the plate and 'projecting through an elongated opening in the side of the fire pot structure as shown in Figure '7.

A blower for forced draft purposes may be used in connection with any of the types of furnaces disclosed herein, and in this connection, said blower is electrically controlled, and if desired may have associated therewith thermostatic means for controlling the operation thereof.

It is to be understood that while this inven tion has been described in connection with a hot air furnace, the features of construction herein described and claimed are equally adapted for use in connection with other types of furnaces, such for instance as hot water or steam furnaces.

What I claim is: Y

1. A bottom draft deflector for furnaces or other like heaters, which consists of a substantially flat imperforate plate arranged within the fire pot of said furnace and serving as the main support for practically the entire supply of coal within said furnace, a support for said deflector plate journaled within said fire pot, a ring carried by said support, grate means carried at the periphery of the plate, cooperating grate means carried by the ring, and means for oscillating the plate and its grate means with respect to the ring and its cooperating grate means for the purposes intended, the entire structure including the plate, ring and both cooperating grate means adapted to be tilted upon its journaled support for dumping purposes.

2. A bottom draft deflector for furnaces or other like heaters, which consists of a substantially imperforate plate structure serving as the main support for Practically the entire supply of coal within the furnace and having at its periphery cooperating parts forming ash shaker or grate means and with certain of said parts capable of movement with respect to others, and means for supporting said structure upon a journaled support to permit tilting of the entire deflector plate structure including the cooperating ash shaker or grate means.

FREDERICK A. WEGNER. 

